These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Plaquenil induced bruising on shins How does hydroxychloroquine effect the eyes Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Hydroxychloroquine SULFATE. Uses. Hydroxychloroquine is used to prevent or treat malaria infections caused by mosquito bites. It does not work against certain types of. Side Effects. Precautions. Interactions. Hydroxychloroquine may not prevent malaria in all cases. If you experience fever or other symptoms of illness, seek immediate medical attention. You may need a different medication. Avoid exposure to mosquitoes. See also Notes section. SIDE EFFECTS Nausea, stomach cramps, loss of appetite, diarrhea, dizziness, or headache may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. If you notice any other effects, check with your healthcare professional. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: Other side effects not listed may also occur in some patients. Plaquenil 200 mg tablets side effects Hydroxychloroquine Side Effects, Dosage, Uses, and More, Hydroxychloroquine Oral Uses, Side Effects, Interactions. Chloroquine brand names in indiaPlaquenil for lupus side effectsDrug of choice for chloroquine resistant malariaIntravenous chloroquine injectionChloroquine toxicity treatment Side-effects aren't common. However, in some people hydroxychloroquine can cause skin rashes, especially those made worse by sunlight. feeling sick nausea or indigestion. diarrhoea. headaches. bleaching of the hair or mild hair loss. tinnitus ringing in the ears Hydroxychloroquine Side-effects, uses, time to work. Hydroxychloroquine 200 mg Tablets Generic Plaquenil. Hydroxychloroquine Plaquenil Success, Reviews and Side Effects. You may report side effects to Health Canada at 1-866-234-2345. Precautions Before taking hydroxychloroquine, tell your doctor or pharmacist if you are allergic to it; or to other aminoquinolines e.g. chloroquine; or if you have any other allergies. Side effects include irritability, headache, weakness, hair lightening or loss, stomach upset, nausea, dizziness, muscle pain, rash and itching. Rarely, hydroxychloroquine can affect the bone marrow leading to reduced white blood cells leukopenia or platelets thrombocytopenia. What Are Side Effects of Plaquenil? Common side effects of Plaquenil include. nausea, vomiting, stomach pain or cramps, loss of appetite, weight loss, diarrhea, dizziness, spinning sensation, headache, ringing in your ears, mood changes, nervousness, irritability, skin rash, itching, or; hair loss.